CN106375376B - Resource recovery method and device - Google Patents
Resource recovery method and device Download PDFInfo
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- CN106375376B CN106375376B CN201610728095.8A CN201610728095A CN106375376B CN 106375376 B CN106375376 B CN 106375376B CN 201610728095 A CN201610728095 A CN 201610728095A CN 106375376 B CN106375376 B CN 106375376B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/141—Setup of application sessions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/146—Markers for unambiguous identification of a particular session, e.g. session cookie or URL-encoding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
- H04L67/5682—Policies or rules for updating, deleting or replacing the stored data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
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Abstract
The embodiment of the invention provides a resource recovery method and a resource recovery device, and belongs to the field of data communication. The method comprises the following steps: the method comprises the steps that a first network device responds to a resource recovery notification sending event, and searches for identification information of a second network device which has established network connection with the first network device and does not establish the network connection currently, wherein the second network device stores network resources which are distributed when the first network device establishes the network connection and correspond to the first network device; and the first network equipment sends a resource recovery notice to second network equipment corresponding to the identification information so as to enable the second network equipment to recover the network resources. According to the method, when the second network equipment receives the resource recovery notice, the network resources distributed when the second network equipment establishes network connection with the first network equipment before can be recovered immediately, the problems of network communication resource waste and untimely recovery are solved, and the resource utilization rate is improved.
Description
Technical Field
The invention relates to the field of data communication, in particular to a resource recovery method and a resource recovery device.
Background
L2TP (Layer 2Tunneling Protocol) is the most widely used VPDN (Virtual Private Dial-up Network) Tunneling Protocol at present. The L2TP establishes a Point-to-Point L2TP tunnel on a public network (e.g., the Internet), encapsulates PPP (Point-to-Point Protocol) data frames, and transmits the PPP data frames through the L2TP tunnel, so that a remote user (e.g., an enterprise outside agency and a business trip personnel) can access the public network by using the PPP, and then can communicate with an enterprise internal network through the L2TP tunnel to access enterprise internal network resources.
The establishment of the L2TP tunnel is initiated by the LAC (L2TP Access Concentrator ), which is established between the LAC and the LNS (L2TP Network Server ). LAC is a device with PPP and L2TP protocol processing capabilities, typically a local ISP (Internet Service Provider) NAS (Network Access Server), which is mainly used to provide Access services for PPP type users. LNSs are devices with PPP and L2TP protocol processing capabilities, typically located at the edge of an enterprise intranet. The LAC acts as an endpoint for the L2TP tunnel, located between the LNS and the remote system, for passing between the LNS and the remote system.
After the client of the remote system dials in the LAC through PPPoE/ISDN, the LAC initiates a request for establishing an L2TP tunnel to the LNS, the LNS allocates an address to the client of the remote system, and the LNS maintains the state information between the LACs and the address information of the remote user.
When the LAC is restarted, the remote system will go through the access process again, but the LNS device cannot sense the restart action, so that the LNS will keep the tunnel state information between the LNS and the LAC and the address information of the remote user all the time, which causes resource waste.
Disclosure of Invention
In view of the above, an object of the embodiments of the present invention is to provide a resource recovery method and apparatus, so as to solve the problems of network communication resource waste and untimely recovery.
In a first aspect, an embodiment of the present invention provides a resource recycling method, where the method includes: the first network equipment responds to a resource recovery notification sending event, searches for identification information of second network equipment which establishes network connection with the first network equipment and does not establish the network connection currently, wherein the second network equipment stores network resources which are distributed when the first network equipment establishes the network connection and correspond to the first network equipment; and the first network equipment sends a resource recovery notice to second network equipment corresponding to the identification information so as to enable the second network equipment to recover the network resources.
In a second aspect, an embodiment of the present invention provides a resource recycling method, where the method includes: when receiving a resource recovery notification sent by a first network device, a second network device acquires identification information of the first network device, wherein the first network device establishes network connection with the second network device, and the second network device stores network resources corresponding to the first network device and allocated when the network connection with the first network device is established; and the second network equipment recovers the network resource corresponding to the identification information.
In a third aspect, an embodiment of the present invention provides a resource recovery method, where the method includes: the method comprises the steps that a first network device responds to a resource recovery notification sending event, and searches for identification information of a second network device which has established network connection with the first network device and does not establish the network connection currently, wherein the second network device stores network resources which are distributed when the first network device establishes the network connection and correspond to the first network device; the first network equipment sends a resource recovery notice to second network equipment corresponding to the identification information; and when the second network equipment receives the resource recovery notification sent by the first network equipment, acquiring the identification information of the first network equipment, and recovering the network resources corresponding to the identification information.
In a fourth aspect, an embodiment of the present invention provides a resource recycling apparatus, which is disposed in a first network device, and includes: an identification information searching unit, configured to search, in response to a resource recovery notification sending event, identification information of a second network device that has established a network connection with the first network device and does not currently establish the network connection, where the second network device stores a network resource that is allocated when the network connection is established with the first network device and corresponds to the first network device; and a notification sending unit, configured to send a resource recovery notification to a second network device corresponding to the identification information, so that the second network device recovers the network resource.
In a fifth aspect, an embodiment of the present invention provides a resource recycling apparatus, which is disposed in a second network device, and includes: a notification receiving unit, configured to obtain identification information of a first network device when receiving a resource recovery notification sent by the first network device, where the first network device establishes a network connection with a second network device, and the second network device stores a network resource corresponding to the first network device and allocated when the network connection is established with the first network device; and the resource recovery unit is used for recovering the network resources corresponding to the identification information.
In a sixth aspect, an embodiment of the present invention provides a network device, which includes a processor and a memory coupled to the processor, the memory storing instructions that, when executed by the processor, cause the network device to: in response to a resource recovery notification sending event, searching identification information of a second network device which has established network connection with the network device and does not establish the network connection currently, wherein the second network device stores network resources which are allocated when the network connection is established with the network device and correspond to the network device; and sending a resource recovery notification to the second network equipment corresponding to the identification information so as to enable the second network equipment to recover the network resources.
In a seventh aspect, an embodiment of the present invention provides a network device, where the network device includes a processor and a memory, where the memory is coupled to the processor, and the memory stores instructions that, when executed by the processor, cause the network device to: when a resource recovery notification sent by a first network device is received, acquiring identification information of the first network device, wherein the first network device establishes network connection with the network device, and the network device stores network resources corresponding to the first network device and allocated when the network connection is established with the first network device; and recovering the network resources corresponding to the identification information.
According to the resource recovery method and device provided by the embodiment of the invention, the identification information of the second network equipment which is connected with the first network equipment through the network and is not connected with the network currently is searched through the first network equipment responding to the resource recovery notification sending event, and the resource recovery notification is sent to the second network equipment corresponding to the identification information, so that the second network equipment can recover the network resources distributed when the network connection with the first network equipment is established before the second network equipment receives the resource recovery notification in real time, the problems of network communication resource waste and untimely recovery are improved, and the resource utilization rate is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic diagram of an L2TP tunnel networking according to an embodiment of the present invention;
fig. 2 is a block diagram of a network device according to an embodiment of the present invention;
FIG. 3 is a flowchart of a resource recycling method according to an embodiment of the present invention;
FIG. 4 is a flow chart of another resource recycling method according to an embodiment of the present invention;
FIG. 5 is a timing diagram illustrating a resource recycling method according to an embodiment of the present invention;
fig. 6 is a block diagram of a resource recycling apparatus according to an embodiment of the present invention;
fig. 7 is a block diagram of another resource recycling apparatus according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic diagram of an L2TP tunnel networking provided in an embodiment of the present invention, and a system after networking includes an establishment between an LAC (L2TP Access Concentrator ) and an LNS (L2TP Network Server, L2TP Network Server). LAC is a device with PPP and L2TP protocol processing capabilities, typically a local ISP (Internet Service Provider) NAS (Network Access Server), which is mainly used to provide Access services for PPP type users. LNSs are devices with PPP and L2TP protocol processing capabilities, typically located at the edge of an enterprise intranet. The LAC acts as an endpoint for the L2TP tunnel, located between the LNS and the remote system, for passing between the LNS and the remote system.
Fig. 2 shows a block diagram of a network device 100 applicable to the embodiments of the present application. The network device 100 may be a first network device in the embodiment of the present invention, for example, an LAC, or may be a second network device in the embodiment of the present invention, for example, an LNS. As shown in fig. 2, network device 100 may include memory 101, processor 102, and network module 103.
The components of the memory 101, the processor 102 and the network module 103 are directly or indirectly connected with each other to realize data transmission or interaction. The resource recovery method includes at least one software functional module that can be stored in the memory 101 in the form of software or firmware (firmware), for example, a software functional module or a computer program included in the resource recovery apparatus.
The memory 101 may store various software programs and modules, such as program instructions/modules corresponding to the resource recycling method and apparatus provided in the embodiments of the present application. The processor 102 executes various functional applications and data processing by executing software programs and modules stored in the memory 101, that is, implements the resource recovery method in the embodiment of the present application. The Memory 101 may include, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Read Only Memory (EPROM), an electrically Erasable Read Only Memory (EEPROM), and the like.
The processor 102 may be an integrated circuit chip having signal processing capabilities. The processor may be a general-purpose processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. Which may implement or perform the methods, steps, and logic blocks disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The network module 103 is used for receiving and transmitting network signals. The network signal may include a wireless signal or a wired signal.
The establishment of the L2TP tunnel is initiated by the LAC and established between the LAC and the LNS. After the client of the remote system dials in the LAC through PPPoE/ISDN, the LAC initiates a request for establishing an L2TP tunnel to the LNS, the LNS allocates an address to the client of the remote system, and the LNS maintains the state information between the LACs and the address information of the remote user. After the LAC is restarted, the client of the remote system can sense that the remote system can go through the access process again, but the LNS device cannot sense the restart action, so that the tunnel state information between the LNS and the LAC and the address information of the remote user can be kept on the LNS all the time, and resources are wasted. In order to solve the above problem, embodiments of the present invention provide a resource recycling method and apparatus.
Referring to fig. 3, a resource recycling method provided in the embodiment of the present invention includes:
step S310: the method comprises the steps that a first network device responds to a resource recovery notification sending event, identification information of a second network device which has established network connection with the first network device and does not establish the network connection at present is searched, and the second network device stores network resources which are distributed when the first network device establishes the network connection and correspond to the first network device.
When the first network device establishes network connection with the second network device, the second network device allocates corresponding network resources to the first network device, and the second network device records the allocation situation of the network resources. For example, when the first network device is a LAC, the second network device is an LNS, and the first network device establishes an L2TP tunnel connection with the second network device, the second network device records L2TP tunnel information of an L2TP tunnel established with the first network device and remote user address information. The remote user address information is address information distributed by the LNS to a client of a remote system initiating a call request to the first network device.
In the working process of the first network device, when the first network device detects that the first network device is in an abnormal state or first establishes network connection with the second network device, in order to enable the second network device to quickly recover the network resources previously allocated to the first network device, the first network device searches identification information of the second network device which establishes network connection with the first network device and does not establish the network connection currently in response to a resource recovery notification sending event. It is to be understood that the identification information may be an IP address or other address information for performing network communication based on the identification information.
It should be noted that there are various trigger conditions for the resource recycling notification sending event, and the trigger conditions may be when the first network device is started, or when the network connection process in the first network device is started, or when the network connection is established for the first network device. The first network device may determine whether the first network device is started by detecting a status code of an identifier representing an operation status of the first network device. The first network device may determine whether the network connection process is started and completed by detecting whether the memory has a process name of the network connection. Wherein the triggering of the resource reclamation notification sending event requires at least one of the above conditions to be satisfied.
Step S320: and the first network equipment sends a resource recovery notice to second network equipment corresponding to the identification information so as to enable the second network equipment to recover the network resources.
The resource recovery notification sent by the first network device to the second network device may be a TCP message or a UDP message carrying the resource recovery notification. The second network device, upon receiving the resource reclamation notification, may reclaim the network resources associated with the first network device allocated when the previous network connection was established with the first network device, where the network resources include the L2TP tunnel and the remote user address.
According to the resource recovery method provided by the embodiment of the invention, by responding to the resource recovery notification sending event and sending the resource recovery notification to the second network equipment corresponding to the identification information, when the second network equipment receives the resource recovery notification, the network resources distributed when the second network equipment establishes network connection with the first network equipment before can be recovered immediately, the problems of network communication resource waste and untimely recovery are solved, and the resource utilization rate is improved.
Referring to fig. 4, a resource recycling method according to an embodiment of the present invention includes:
step S410: when receiving a resource recovery notification sent by a first network device, a second network device acquires identification information of the first network device, wherein the first network device establishes network connection with the second network device, and the second network device stores network resources corresponding to the first network device and allocated when the network connection is established with the first network device.
Step S420: and the second network equipment recovers the network resource corresponding to the identification information.
According to the resource recovery method provided by the embodiment of the invention, by receiving the resource recovery notice sent by the first network equipment, the second network equipment can immediately recover the network resources allocated when the second network equipment establishes network connection with the first network equipment before receiving the resource recovery notice, so that the problems of network communication resource waste and untimely recovery are solved, and the resource utilization rate is improved.
Referring to fig. 5, a resource recycling method according to an embodiment of the present invention includes:
step S510: the method comprises the steps that a first network device responds to a resource recovery notification sending event, identification information of a second network device which has established network connection with the first network device and does not establish the network connection at present is searched, and the second network device stores network resources which are distributed when the first network device establishes the network connection and correspond to the first network device.
Step S520: and the first network equipment sends a resource recovery notice to the second network equipment corresponding to the identification information.
Step S530: and when the second network equipment receives the resource recovery notification sent by the first network equipment, acquiring the identification information of the first network equipment, and recovering the network resources corresponding to the identification information.
Referring to fig. 6, a resource recycling apparatus 600 provided in an embodiment of the present invention is disposed in a first network device, where the apparatus 600 includes:
an identification information searching unit 610, configured to search, in response to a resource recycling notification sending event, identification information of a second network device that has established a network connection with the first network device and does not currently establish the network connection, where the second network device stores a network resource that is allocated when the network connection is established with the first network device and corresponds to the first network device.
Wherein the trigger condition of the resource recycling notification sending event comprises at least one of the following conditions: when the first network equipment is started; when the starting of the network connection process in the first network equipment is completed; and when the first network device establishes a network connection. The first network device may establish a network connection in response to a call connection request sent by a user terminal.
A notification sending unit 620, configured to send a resource recovery notification to a second network device corresponding to the identification information, so that the second network device recovers the network resource.
The notification sending unit 620 may send a TCP packet or a UDP packet carrying a resource recovery notification to the second network device corresponding to the identification information.
In this embodiment, the network connection may be an L2TP tunnel connection, the first device may be an access concentrator, and the second device may be a network server.
Note that, the units in this embodiment may be implemented by software codes, and in this case, the units may be stored in the memory 101 of the network device 100. The above units may also be implemented by hardware, for example, an integrated circuit chip.
Referring to fig. 7, a resource recycling apparatus 700 provided in an embodiment of the present invention is disposed in a first network device, where the apparatus 700 includes:
a notification receiving unit 710, configured to obtain identification information of a first network device when receiving a resource recovery notification sent by the first network device, where the first network device establishes a network connection with a second network device, and the second network device stores a network resource corresponding to the first network device and allocated when the network connection is established with the first network device.
A resource recycling unit 720, configured to recycle the network resource corresponding to the identification information. In an embodiment, the resource recycling unit 720 may be configured to search for L2TP tunnel information and remote user address information corresponding to the identification information, and delete the L2TP tunnel information and remote user address information.
Note that, the units in this embodiment may be implemented by software codes, and in this case, the units may be stored in the memory 101 of the network device 100. The above units may also be implemented by hardware, for example, an integrated circuit chip.
It should be noted that, as will be clear to those skilled in the art, for convenience and brevity of description, the specific working process of the above-described apparatus embodiment may refer to the corresponding process in the foregoing method embodiment, and is not described herein again.
In summary, according to the resource recovery method and apparatus provided in the embodiments of the present invention, in response to a resource recovery notification sending event, a first network device searches for identification information of a second network device that has established a network connection with the first network device and does not currently establish the network connection, and sends a resource recovery notification to the second network device corresponding to the identification information, so that when the second network device receives the resource recovery notification, the network resource allocated when the second network device establishes the network connection with the first network device before can be immediately recovered, the problems of network communication resource waste and untimely recovery are improved, and the resource utilization rate is improved.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (11)
1. A method for resource recovery, the method comprising:
the first network equipment responds to a resource recovery notification sending event, searches for identification information of second network equipment which establishes network connection with the first network equipment and does not establish the network connection currently, wherein the second network equipment stores network resources which are distributed when the first network equipment establishes the network connection and correspond to the first network equipment;
the first network device sends a resource recovery notification for recovering the corresponding network resource to a second network device corresponding to the identification information, so that the second network device searches for L2TP tunnel information and remote user address information corresponding to the identification information;
the first network device is an access concentrator, and the second network device is a network server.
2. The method of claim 1, wherein the triggering condition of the resource recovery notification sending event comprises at least one of the following conditions:
when the first network equipment is started;
when the starting of the network connection process in the first network equipment is completed; and
and the first network equipment responds to a call connection request sent by the user terminal to establish network connection.
3. The method according to claim 1 or 2, wherein the network connection is an L2TP tunnel connection.
4. A method for resource recovery, the method comprising:
when receiving a resource recovery notification sent by a first network device for recovering corresponding network resources, a second network device acquires identification information of the first network device, wherein the first network device and the second network device establish network connection, and the second network device stores the network resources corresponding to the first network device, which are allocated when the network connection is established with the first network device;
the second network equipment recovers the network resource corresponding to the identification information;
wherein, the first network device is an access concentrator, the second network device is a network server, and the second network device recovers the network resource, including:
and the second network equipment searches L2TP tunnel information and remote user address information corresponding to the identification information.
5. The method of claim 4, wherein the first network device reclaims the network resource, further comprising:
the second network device deletes the L2TP tunnel information and remote user address information.
6. A method for resource recovery, the method comprising:
the first network equipment responds to a resource recovery notification sending event, searches for identification information of second network equipment which establishes network connection with the first network equipment and does not establish the network connection currently, wherein the second network equipment stores network resources which are distributed when the first network equipment establishes the network connection and correspond to the first network equipment;
the first network equipment sends a resource recovery notice to second network equipment corresponding to the identification information;
when the second network equipment receives a resource recovery notification sent by first network equipment, acquiring identification information of the first network equipment, and recovering network resources corresponding to the identification information;
wherein, the first network device is an access concentrator, the second network device is a network server, and the recovering of the network resource corresponding to the identification information includes:
and the second network equipment searches L2TP tunnel information and remote user address information corresponding to the identification information.
7. A resource recycling apparatus, disposed in a first network device, the apparatus comprising:
an identification information searching unit, configured to search, in response to a resource recovery notification sending event, for identification information of a second network device that has established a network connection with the first network device and does not currently establish the network connection, where the second network device stores a network resource that is allocated when the network connection is established with the first network device and corresponds to the first network device;
a notification sending unit, configured to send a resource recovery notification for recovering the corresponding network resource to a second network device corresponding to the identification information, so that the second network device searches for L2TP tunnel information and remote user address information corresponding to the identification information;
the first network device is an access concentrator, and the second network device is a network server.
8. The apparatus of claim 7, wherein the triggering condition of the resource recycling notification sending event comprises at least one of the following conditions:
when the first network equipment is started;
when the starting of the network connection process in the first network equipment is completed; and
and the first network equipment responds to a call connection request sent by the user terminal to establish network connection.
9. The apparatus of claim 7 or 8, wherein the network connection is an L2TP tunnel connection.
10. A resource recycling apparatus, disposed in a second network device, the apparatus comprising:
a notification receiving unit, configured to obtain identification information of a first network device when receiving a resource recovery notification sent by the first network device, where the first network device establishes a network connection with a second network device, and the second network device stores a network resource corresponding to the first network device and allocated when the network connection is established with the first network device;
the resource recovery unit is used for recovering the network resources corresponding to the identification information;
the first network device is an access concentrator, the second network device is a network server, and the resource recovery unit is configured to search for L2TP tunnel information and remote user address information corresponding to the identification information.
11. The apparatus according to claim 10, wherein the resource recovery unit is specifically configured to delete the L2TP tunnel information and the remote user address information.
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| CN103227773B (en) * | 2012-03-31 | 2016-05-11 | 杭州华三通信技术有限公司 | A kind of method and system thereof of setting up VPDN connection |
| CN105340246A (en) * | 2014-05-29 | 2016-02-17 | 华为技术有限公司 | Method, apparatus and device for managing system resource |
| CN104394056B (en) * | 2014-11-24 | 2018-04-24 | 中国联合网络通信集团有限公司 | The guard method of Layer 2 Tunneling Protocol L2TP networks and device |
| CN105844338A (en) * | 2016-05-09 | 2016-08-10 | 北京天龙天天洁再生资源回收利用有限公司 | User-oriented resource recovery method and apparatus |
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